<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>lesson4_twolayout</title>
		<link rel="stylesheet" type="text/css" href="css/lesson4_twolayout.css"/>
	</head>
	<body>
		<!--两栏布局 注意:上下不能交换-->
		<div class="right"></div>
		<div class="left"></div>
	</body>
</html>
